v. 1. Ancient Japan / edited by Delmer M. Brown -- v. 2. Heian Japan / edited by Donald H. Shively, William H. McCullough -- v. 3. Medieval Japan / edited by Kozo Yamamura -- v. 4. Early modern Japan / edited by John Whitney Hall -- v. 5. The nineteenth century / edited by Marius B. Jansen -- v. 6. The twentieth century / edited by Peter Duus.
The documents themselves are in Japanese, but there is an English search engine and English summaries. Look for the English "On-Site Exhibitions" to see the original Japanese documents put into historical context.